湿地松大田育苗二次切根效果试验  

Experiment on Secondary Root Cutting Effect of Field Seedling of Pinus elliottii

作　　者：杜建平 童俊彪 马小勤 黄雪龙 肖建秀 DU Jian-ping(Xiajiang County Forest District Management Committee,Xiajiang,Jiangxi331409)

机构地区：[1]峡江县林区管理委员会,江西峡江331409 [2]峡江县林业局,江西峡江331409 [3]峡江县巴邱镇政务服务中心,江西峡江331400 [4]新干县林业局,江西新干331300

出　　处：《园艺与种苗》2023年第10期41-42,共2页Horticulture & Seed

摘　　要：[目的]培育优质健壮湿地松苗木,提高造林成活率。[方法]湿地松大田育苗在出圃前进行二次切根,调查其苗高、地径、侧根数、须根数等因子,并与未切根苗生长情况进行比较。[结果]经方差和多重比较分析,与未切根苗相比,湿地松二次切根苗的侧根数、侧根总长、须根数均显著增加,切根时间以9月中旬为佳。[结论]湿地松二次切根苗木根系发达,有利于造林成活率的提高。[Objective]The aim of this study was to cultivate high-quality and strong seedlings of Pinus elliottii and improve the survival rate of afforestation.[Method]P.elliottii seedlings in the field were cut twice before leaving the nursery.The seedling height,ground diameter,lateral root number and fibrous root number were investigated and compared with the growth of uncut seedlings.[Result]Through variance and multiple comparison analysis,compared with uncut seedlings,the secondary root cutting seedlings of P.elliottii showed a significant increase in the number of lateral roots,total length of lateral roots,and number of fibrous roots.The optimal root cutting time was in mid-September.[Conclusion]The secondary root cutting seedlings of P.elliottii have well-developed root systems,which is beneficial for improving the survival rate of afforestation.

关 键 词：湿地松 大田育苗 二次切根 

分 类 号：S791.246[农业科学—林木遗传育种]